Multihazard Response Control of Base-Isolated Buildings under Bidirectional Dynamic Excitation

Table 3

Residual resultant isolator displacements of four-story base-isolated buildings under NF earthquakes, FF earthquakes, and BIGMs.

Excitation		Residual resultant isolator displacement for buildings (= 0.4 s,  = 0.05) equipped with different isolation systems (cm)
		LRB ( = 2 s and  = 0.1)	N-Z ( = 2 s,  = 0.05, and  = 0.1)	PF ( = 0.05)	FPS ( = 2 s and  = 0.05)	R-FBI ( = 2 s,  = 0.05, and  = 0.1)
NF earthquake	IV1979	1.24	0.61	102.50	0.41	0.56
	LP1989	1.21	0.91	41.74	0.24	0.23
	NR1994	0.48	0.19	16.98	0.38	0.13
FF earthquake	IV1979F	0.62	0.12	11.63	0.62	0.60
	LP1989F	2.82	0.59	33.89	0.07	0.10
	NR1994F	0.66	0.51	5.19	0.55	0.53
BIGM	Q = 75 t; θ = 30°	0.06	0.02	101.32	2.26	1.88
	Q = 75 t; θ = 45°	0.06	0.02	101.32	2.26	1.88